阅读说明：本技术 一种水性聚氨酯油墨连接料及其制备方法 (Water-based polyurethane ink binder and preparation method thereof ) 是由 欧华新 于 2021-07-05 设计创作，主要内容包括：本发明公开了一种水性聚氨酯油墨连接料及其制备方法,所述的水性油墨连接料,其制备原料由以下成分组成,且各成分的重量份为：聚氨酯35-45份、中和剂1.5-3份、矿物油20-40份、植物油10-15份、纳米纤维30-35份、水若干份,本发明的在制作水性油墨连接料时,采用增加纳米纤维的方式,极大提高连接料其本身的耐磨性能,在制备成油墨印刷在印刷品表面上时,连接料能够起到很好的保护颜料的作用,内含纳米纤维能够很好提高耐磨性,与现有的增加强度较高的颗粒与改性的方式相比,在提高耐磨性的同时,其制备方法简单,且满足生物降解,更加环保。(The invention discloses a water-based polyurethane ink binder and a preparation method thereof, wherein the preparation raw material of the water-based ink binder comprises the following components in parts by weight: 35-45 parts of polyurethane, 1.5-3 parts of neutralizer, 20-40 parts of mineral oil, 10-15 parts of vegetable oil, 30-35 parts of nano fiber and a plurality of parts of water.)

1. The aqueous polyurethane ink binder is characterized in that the preparation raw materials comprise the following components in parts by weight:

35-45 parts of polyurethane, 1.5-3 parts of a neutralizer, 20-40 parts of mineral oil, 10-15 parts of vegetable oil, 30-35 parts of nano fibers and a plurality of parts of water.

2. The aqueous polyurethane ink vehicle of claim 1, wherein the raw materials comprise, in parts by weight:

40 parts of polyurethane, 2 parts of a neutralizer, 30 parts of mineral oil, 12 parts of vegetable oil, 32 parts of nano-fibers and a plurality of parts of water.

3. The aqueous polyurethane ink vehicle of claim 2, wherein: the neutralizing agent comprises slaked lime powder and a small amount of quicklime powder.

4. The aqueous polyurethane ink vehicle of claim 3, wherein: the vegetable oil comprises one of tung oil, linseed oil and soybean oil.

5. The preparation method of the aqueous polyurethane ink binder is characterized by comprising the following steps of;

s1, weighing various raw materials according to the specified weight parts, pouring polyurethane, mineral oil and vegetable oil into a stirring container, and simultaneously dropwise adding a proper amount of water for increasing;

s2, starting the stirring container to stir for 30-40 minutes, wherein the rotating speed of the stirring blade is 200-300 r/min;

s3, after stirring, uniformly distributing a neutralizing agent on the surface of the solution in a uniformly scattering mode, then scattering the nano fibers, starting a stirring container, and continuously stirring to uniformly distribute the neutralizing agent and the nano fibers in the raw materials;

s4, adding water for emulsification, finally mixing the stirred raw materials by adding water, heating to 50 ℃, starting a stirring container, and stirring for 2-3h under the condition of 500-600 r/min.

6. The method of claim 5, wherein the method of preparing the nanofibers comprises the steps of;

selecting a proper amount of inorganic acid and fiber raw materials, sterilizing and degerming the fiber raw materials, and grinding the fiber raw materials after drying;

step two, pouring the treated fiber raw material into a reaction container, pouring a proper amount of inorganic acid, and stirring for 1h by using stirring equipment at the rotating speed of 300-400 r/min;

step three, stretching a metal rod for stirring, and transferring negative charges carried on the fibers in the reaction container by using the metal rod;

and step four, filtering and drying the solution in the reactor, and crushing the dried solution to obtain fiber powder.

7. The method of claim 6, wherein the aqueous polyurethane ink vehicle comprises: in the first step, the inorganic acid is one of nitric acid, hydrochloric acid and sulfuric acid.

8. The method of claim 7, wherein the aqueous polyurethane ink vehicle comprises: in the first step, the fiber raw material adopts one of bacterial fiber, leaf limiting and bast fiber.

Technical Field

The invention relates to the technical field of binders, in particular to a water-based polyurethane ink binder and a preparation method thereof.

Background

Ink vehicles, also known as coupling agents, coupling agents or varnish (Vehicle), are liquid substances made of miscible high molecular substances and are used as dispersion media in inks. The ink is a liquid with certain viscosity and fluidity, but not necessarily all oily, and has a connection function, so that solid substances such as pigments, fillers and the like are dispersed in the ink, and the ink is beneficial to uniform transfer during printing. The binder enables the pigment particles to be well dispersed, and is a carrier for the pigment particles, which is transferred to the surface of a printing material by a printer. Thus, the binder imparts ink flow ability, printing ability. The ink is said to bind the pigments together by the binder, which acts to transfer the colorant from the printing plate to the substrate. Its another important function is that the pigment is dried to form film, which is firmly attached to the surface of printed matter and can make the ink film resist friction and lustre. Thus, the binder is a film-forming substance that determines the drying properties of the ink and the quality of the film, and whether the ink can be dried, fixed and formed on the surface of the substrate.

At present, means for improving the wear resistance of a water-based ink film layer mainly comprise adding particles with higher mechanical strength such as aluminum oxide, silicon oxide and the like [ Liu Jun, Wei jin Mai, Yan, Xuhai, Lihong soldier, Liqu Ping and Liu Shi Feng ] into the water-based ink; the formula of zui kou, Duyinpu, the development of nano aqueous flexographic printing ink, the packaging industry, 2003, 113. In addition, a modifier can also be added in the polymerization process of the aqueous ink binder resin, so that a cross-linked structure is formed inside the structure of the binder resin, and the molecular structure of the binder resin is more compact, thereby improving the wear resistance of an ink film layer [ Fisher, Zhang Lisa, Zhoushun, research on aqueous ink using acrylic resin as a base material, university of Master and China (Nature science edition); zan, improvement of abrasion resistance and adhesion of UV gloss oil on metal ink, printing technology, 2011, 10; synthesis and performance research of the Chenlan, Chenyifeng, Zhu Fang, Wanting, Jiang Hua Ke aldehyde modified water-based acrylate resin, and adhesion, 2004 and 25, however, inorganic oxides for improving the wear resistance of an ink film layer cannot realize biodegradation, and certain pressure can be generated on the natural environment when the inorganic oxides are used in a large scale; the modifier in the binder polymerization process is generally a chemical synthesis product, consumes a large amount of chemical reagents and generates volatile pollutants in the preparation and use processes, is not beneficial to environmental protection and is not suitable for sustainable development, and therefore, the aqueous polyurethane ink binder and the preparation method thereof are provided.

Disclosure of Invention

The invention aims to provide a waterborne polyurethane ink connecting material capable of improving wear resistance and a preparation method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the water-based polyurethane ink connecting material is prepared from the following raw materials in parts by weight:

35-45 parts of polyurethane, 1.5-3 parts of a neutralizer, 20-40 parts of mineral oil, 10-15 parts of vegetable oil, 30-35 parts of nano fibers and a plurality of parts of water.

Preferably, the raw materials comprise the following components in parts by weight:

40 parts of polyurethane, 2 parts of a neutralizer, 30 parts of mineral oil, 12 parts of vegetable oil, 32 parts of nano-fibers and a plurality of parts of water.

Preferably, the neutralizing agent comprises slaked lime powder and a small amount of quicklime powder.

Preferably, the vegetable oil comprises one of tung oil, linseed oil and soybean oil.

Preferably, the preparation method of the aqueous polyurethane ink vehicle comprises the following steps;

s1, weighing various raw materials according to the specified weight part, pouring polyurethane, mineral oil and vegetable oil into a stirring container, and simultaneously dropwise adding a proper amount of water for increasing;

s2, starting the stirring container to stir for 30-40 minutes, wherein the rotating speed of the stirring blade is 200-300 r/min;

s3, after stirring, uniformly distributing a neutralizing agent on the surface of the solution in a uniformly scattering mode, then scattering the nano fibers, starting a stirring container, and continuously stirring to uniformly distribute the neutralizing agent and the nano fibers in the raw materials;

s4, adding water for emulsification, finally mixing the stirred raw materials by adding water, heating to 50 ℃, starting a stirring container, and stirring for 2-3h under the condition of 500-600 r/min.

Preferably, the preparation method of the nanofiber comprises the following steps;

selecting a proper amount of inorganic acid and fiber raw materials, sterilizing and degerming the fiber raw materials, and grinding the fiber raw materials after drying;

step two, pouring the treated fiber raw material into a reaction container, pouring a proper amount of inorganic acid, and stirring for 1h by using stirring equipment at the rotating speed of 300-400 r/min;

step three, stretching a metal rod for stirring, and transferring negative charges on the fibers in the reaction container by using the metal rod;

and step four, filtering and drying the solution in the reactor, and crushing the dried solution to obtain fiber powder.

Preferably, in the first step, one of nitric acid, hydrochloric acid and sulfuric acid is used as the inorganic acid.

Preferably, in the first step, the fiber raw material is one of bacterial fiber, leaf spacing and bast fiber.

Compared with the prior art, the invention has the beneficial effects that:

1. when the aqueous ink binder is prepared, the nano-fiber is added, so that the wear resistance of the binder is greatly improved, when the prepared ink is printed on the surface of a printed matter, the binder can play a good role in protecting the pigment, the nano-fiber is contained, so that the wear resistance can be well improved, compared with the existing mode of adding particles with higher strength and modifying, the aqueous ink binder is simple in preparation method, meets the requirement of biodegradation, and is more environment-friendly.

2. The neutralizing agent is added in the invention, so that excessive free fatty acid in the vegetable oil and fatty acid in polyurethane can be effectively neutralized and stopped, excessive viscosity of the connecting material is avoided, and the strength of the fiber is improved by gathering excessive hydrated lime suspended matters on the nanofiber whiskers.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The water-based polyurethane ink binder is prepared from the following raw materials in parts by weight:

35-45 parts of polyurethane, 1.5-3 parts of a neutralizer, 20-40 parts of mineral oil, 10-15 parts of vegetable oil, 30-35 parts of nano fibers and a plurality of parts of water.

Preferably, the raw materials comprise the following components in parts by weight:

35 parts of polyurethane, 1.5 parts of neutralizer, 20 parts of mineral oil, 10 parts of vegetable oil, 30 parts of nano-fiber and a plurality of parts of water.

Preferably, the neutralizing agent comprises slaked lime powder and a small amount of quicklime powder.

Preferably, the vegetable oil comprises one of tung oil, linseed oil and soybean oil.

Preferably, the preparation method of the aqueous polyurethane ink vehicle comprises the following steps;

s1, weighing various raw materials according to the specified weight part, pouring polyurethane, mineral oil and vegetable oil into a stirring container, and simultaneously dropwise adding a proper amount of water for increasing;

s2, starting the stirring container to stir for 30-40 minutes, wherein the rotating speed of the stirring blade is 200-300 r/min;

s3, after stirring, uniformly distributing a neutralizing agent on the surface of the solution in a uniformly scattering mode, then scattering the nano fibers, starting a stirring container, and continuously stirring to uniformly distribute the neutralizing agent and the nano fibers in the raw materials;

s4, adding water for emulsification, finally mixing the stirred raw materials by adding water, heating to 50 ℃, starting a stirring container, and stirring for 2-3h under the condition of 500-600 r/min.

Preferably, the preparation method of the nanofiber comprises the following steps;

selecting a proper amount of inorganic acid and fiber raw materials, sterilizing and degerming the fiber raw materials, and grinding the fiber raw materials after drying;

step two, pouring the treated fiber raw material into a reaction container, pouring a proper amount of inorganic acid, and stirring for 1h by using stirring equipment at the rotating speed of 300-400 r/min;

step three, stretching a metal rod for stirring, and transferring negative charges on the fibers in the reaction container by using the metal rod;

and step four, filtering and drying the solution in the reactor, and crushing the dried solution to obtain fiber powder.

Preferably, in the first step, one of nitric acid, hydrochloric acid and sulfuric acid is used as the inorganic acid.

Preferably, in the first step, the fiber raw material is one of bacterial fiber, leaf spacing and bast fiber.

Example 2

The water-based polyurethane ink binder is prepared from the following raw materials in parts by weight:

35-45 parts of polyurethane, 1.5-3 parts of a neutralizer, 20-40 parts of mineral oil, 10-15 parts of vegetable oil, 30-35 parts of nano fibers and a plurality of parts of water.

Preferably, the raw materials comprise the following components in parts by weight:

35 parts of polyurethane, 3 parts of a neutralizer, 20 parts of mineral oil, 10 parts of vegetable oil, 30 parts of nano-fiber and a plurality of parts of water.

Preferably, the neutralizing agent comprises slaked lime powder and a small amount of quicklime powder.

Preferably, the vegetable oil comprises one of tung oil, linseed oil and soybean oil.

Preferably, the preparation method of the aqueous polyurethane ink vehicle comprises the following steps;

s1, weighing various raw materials according to the specified weight part, pouring polyurethane, mineral oil and vegetable oil into a stirring container, and simultaneously dropwise adding a proper amount of water for increasing;

s2, starting the stirring container to stir for 30-40 minutes, wherein the rotating speed of the stirring blade is 200-300 r/min;

s3, after stirring, uniformly distributing a neutralizing agent on the surface of the solution in a uniformly scattering mode, then scattering the nano fibers, starting a stirring container, and continuously stirring to uniformly distribute the neutralizing agent and the nano fibers in the raw materials;

s4, adding water for emulsification, finally mixing the stirred raw materials by adding water, heating to 50 ℃, starting a stirring container, and stirring for 2-3h under the condition of 500-600 r/min.

Preferably, the preparation method of the nanofiber comprises the following steps;

selecting a proper amount of inorganic acid and fiber raw materials, sterilizing and degerming the fiber raw materials, and grinding the fiber raw materials after drying;

step two, pouring the treated fiber raw material into a reaction container, pouring a proper amount of inorganic acid, and stirring for 1h by using stirring equipment at the rotating speed of 300-400 r/min;

step three, stretching a metal rod for stirring, and transferring negative charges on the fibers in the reaction container by using the metal rod;

and step four, filtering and drying the solution in the reactor, and crushing the dried solution to obtain fiber powder.

Preferably, in the first step, one of nitric acid, hydrochloric acid and sulfuric acid is used as the inorganic acid.

Preferably, in the first step, the fiber raw material is one of bacterial fiber, leaf spacing and bast fiber.

Example 3

The water-based polyurethane ink binder is prepared from the following raw materials in parts by weight:

35-45 parts of polyurethane, 1.5-3 parts of a neutralizer, 20-40 parts of mineral oil, 10-15 parts of vegetable oil, 30-35 parts of nano fibers and a plurality of parts of water.

Preferably, the raw materials comprise the following components in parts by weight:

45 parts of polyurethane, 3 parts of a neutralizer, 40 parts of mineral oil, 15 parts of vegetable oil, 35 parts of nano-fibers and a plurality of parts of water.

Preferably, the neutralizing agent comprises slaked lime powder and a small amount of quicklime powder.

Preferably, the vegetable oil comprises one of tung oil, linseed oil and soybean oil.

Preferably, the preparation method of the aqueous polyurethane ink vehicle comprises the following steps;

s1, weighing various raw materials according to the specified weight part, pouring polyurethane, mineral oil and vegetable oil into a stirring container, and simultaneously dropwise adding a proper amount of water for increasing;

s2, starting the stirring container to stir for 30-40 minutes, wherein the rotating speed of the stirring blade is 200-300 r/min;

s3, after stirring, uniformly distributing a neutralizing agent on the surface of the solution in a uniformly scattering mode, then scattering the nano fibers, starting a stirring container, and continuously stirring to uniformly distribute the neutralizing agent and the nano fibers in the raw materials;

s4, adding water for emulsification, finally mixing the stirred raw materials by adding water, heating to 50 ℃, starting a stirring container, and stirring for 2-3h under the condition of 500-600 r/min.

Preferably, the preparation method of the nanofiber comprises the following steps;

selecting a proper amount of inorganic acid and fiber raw materials, sterilizing and degerming the fiber raw materials, and grinding the fiber raw materials after drying;

step two, pouring the treated fiber raw material into a reaction container, pouring a proper amount of inorganic acid, and stirring for 1h by using stirring equipment at the rotating speed of 300-400 r/min;

step three, stretching a metal rod for stirring, and transferring negative charges on the fibers in the reaction container by using the metal rod;

and step four, filtering and drying the solution in the reactor, and crushing the dried solution to obtain fiber powder.

Preferably, in the first step, one of nitric acid, hydrochloric acid and sulfuric acid is used as the inorganic acid.

Preferably, in the first step, the fiber raw material is one of bacterial fiber, leaf spacing and bast fiber.

Example 4

The water-based polyurethane ink binder is prepared from the following raw materials in parts by weight:

35-45 parts of polyurethane, 1.5-3 parts of a neutralizer, 20-40 parts of mineral oil, 10-15 parts of vegetable oil, 30-35 parts of nano fibers and a plurality of parts of water.

Preferably, the raw materials comprise the following components in parts by weight:

45 parts of polyurethane, 1.5 parts of a neutralizer, 40 parts of mineral oil, 15 parts of vegetable oil, 35 parts of nano-fibers and a plurality of parts of water.

Preferably, the neutralizing agent comprises slaked lime powder and a small amount of quicklime powder.

Preferably, the vegetable oil comprises one of tung oil, linseed oil and soybean oil.

Preferably, the preparation method of the aqueous polyurethane ink vehicle comprises the following steps;

s1, weighing various raw materials according to the specified weight part, pouring polyurethane, mineral oil and vegetable oil into a stirring container, and simultaneously dropwise adding a proper amount of water for increasing;

s2, starting the stirring container to stir for 30-40 minutes, wherein the rotating speed of the stirring blade is 200-300 r/min;

s3, after stirring, uniformly distributing a neutralizing agent on the surface of the solution in a uniformly scattering mode, then scattering the nano fibers, starting a stirring container, and continuously stirring to uniformly distribute the neutralizing agent and the nano fibers in the raw materials;

s4, adding water for emulsification, finally mixing the stirred raw materials by adding water, heating to 50 ℃, starting a stirring container, and stirring for 2-3h under the condition of 500-600 r/min.

Preferably, the preparation method of the nanofiber comprises the following steps;

selecting a proper amount of inorganic acid and fiber raw materials, sterilizing and degerming the fiber raw materials, and grinding the fiber raw materials after drying;

step two, pouring the treated fiber raw material into a reaction container, pouring a proper amount of inorganic acid, and stirring for 1h by using stirring equipment at the rotating speed of 300-400 r/min;

step three, stretching a metal rod for stirring, and transferring negative charges on the fibers in the reaction container by using the metal rod;

and step four, filtering and drying the solution in the reactor, and crushing the dried solution to obtain fiber powder.

Preferably, in the first step, one of nitric acid, hydrochloric acid and sulfuric acid is used as the inorganic acid.

Preferably, in the first step, the fiber raw material is one of bacterial fiber, leaf spacing and bast fiber.

Example 5

The water-based polyurethane ink binder is prepared from the following raw materials in parts by weight:

35-45 parts of polyurethane, 1.5-3 parts of a neutralizer, 20-40 parts of mineral oil, 10-15 parts of vegetable oil, 30-35 parts of nano fibers and a plurality of parts of water.

Preferably, the raw materials comprise the following components in parts by weight:

45 parts of polyurethane, 1.5 parts of a neutralizer, 40 parts of mineral oil, 15 parts of vegetable oil, 30 parts of nano-fiber and a plurality of parts of water.

Preferably, the neutralizing agent comprises slaked lime powder and a small amount of quicklime powder.

Preferably, the vegetable oil comprises one of tung oil, linseed oil and soybean oil.

Preferably, the preparation method of the aqueous polyurethane ink vehicle comprises the following steps;

s1, weighing various raw materials according to the specified weight part, pouring polyurethane, mineral oil and vegetable oil into a stirring container, and simultaneously dropwise adding a proper amount of water for increasing;

s2, starting the stirring container to stir for 30-40 minutes, wherein the rotating speed of the stirring blade is 200-300 r/min;

s3, after stirring, uniformly distributing a neutralizing agent on the surface of the solution in a uniformly scattering mode, then scattering the nano fibers, starting a stirring container, and continuously stirring to uniformly distribute the neutralizing agent and the nano fibers in the raw materials;

s4, adding water for emulsification, finally mixing the stirred raw materials by adding water, heating to 50 ℃, starting a stirring container, and stirring for 2-3h under the condition of 500-600 r/min.

Preferably, the preparation method of the nanofiber comprises the following steps;

selecting a proper amount of inorganic acid and fiber raw materials, sterilizing and degerming the fiber raw materials, and grinding the fiber raw materials after drying;

step two, pouring the treated fiber raw material into a reaction container, pouring a proper amount of inorganic acid, and stirring for 1h by using stirring equipment at the rotating speed of 300-400 r/min;

step three, stretching a metal rod for stirring, and transferring negative charges on the fibers in the reaction container by using the metal rod;

and step four, filtering and drying the solution in the reactor, and crushing the dried solution to obtain fiber powder.

Preferably, in the first step, one of nitric acid, hydrochloric acid and sulfuric acid is used as the inorganic acid.

Preferably, in the first step, the fiber raw material is one of bacterial fiber, leaf spacing and bast fiber.

In the scheme, in order to detect that different functions are brought to the connecting material by different contents of neutralizing agents and nano fibers, personnel fuse the connecting material prepared in the embodiments 1-5 with pigment powder and then print the connecting material, and perform an artificial wear resistance test after the printed matter is dried, so that the wear resistance of different printed matters in the embodiments 1-5 can be obtained according to the wear degree.

Meanwhile, in the scheme, the following chart is obtained by combining the above embodiments:

	example 1	Example 2	Example 3	Example 4	Example 5
						Viscosity of the oil	√√√	√√	√√	√√√	√√√
Fluidity of the resin	√√	√√√	√√√	√√	√√
						Wear resistance	√√	√√√	√√√	√√√	√√

The larger the number of "√" in the figure, the stronger the corresponding function, and it is known from the table that the wear resistance of the binder is improved by increasing the contents of the neutralizer and the nanofibers.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.